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中文摘要：
结构的无弹性的反应的特征影响了 byhanging 墙，在 1999 假装聪明的地震的前面的择向性被调查。为运动由这些近地的效果影响了的地面的 Inelasticdisplacement 比率(IDR ) 与远地的地面运动相比 andcomprehensively 被评估。另外，到挂墙和矿脉基卒下盘地面运动的无弹性的 displacementresponses 被比较。theinelastic 排水量反应被由矿脉基卒下盘在长时期范围挂 walland 显著地在短时期范围影响，这被结束。尽管高山峰地面加速是观察 athanging 墙车站，为挂墙地点上的结构的 IDR 仅仅比在长时期范围的 footwallsites 大。前面的择向性效果比大约 0.5s 为 periodslonger 导致更大的 IDR。为用 far-fieldground 运动建立的 IDR 采用统计关系可以在位于近地的区域的地震评估 ofexisting 结构导致 overestimation 或低估，取决于他们的基本颤动时期。
英文摘要：
The characteristics of the inelastic response of structures affected by hanging wall and forward directivity in the 1999 Chi-Chi earthquake are investigated. Inelastic displacement ratios （IDRs） for ground motions impacted by these nearfield effects are evaluated and comprehensively compared to far-field ground motions. In addition, the inelastic displacement responses to hanging wall and footwall ground motions are compared. It is concluded that the inelastic displacement response is significantly affected in the short period range by hanging wall and in the long period range by footwall. Although high peak ground acceleration was observed at hanging wall stations, the IDRs for structures on hanging wall sites are only larger than footwall sites in the very long period range. Forward directivity effects result in larger IDRs for periods longer than about 0.5s. Adopting statistical relationships for IDRs established using far-field ground motions may lead to either overestimation or underestimation in the seismic evaluation of existing structures located in near-field regions, depending on their fundamental vibration periods.
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Effects of hanging wall and forward directivity in the 1999 Chi-Chi earthquake on inelastic displace
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